Recently, stellar mass PBHs have received renewed interest [1]}, [2]}, [3]} since the gravitational wave events detected by LIGO [4]} and Virgo [5]}. Intermediate-mass black holes show clues in LIGO and Virgo detection [6]}. A supermassive black hole detection is being discussed [7]}. We propose to search for high redshift gravitational wave signals from PBH binaries, which covers a large mass range of PBHs at high redshift. Due to the frequency of gravitational wave from high redshift source is highly redshifted, the usage of high frequency ground-based gravitational wave detector is limited. Targeting high redshift signals needs the low frequency space-based gravitational wave detector such as LISA [8]}, DECIGO [9]}, SKA [10]}. The detectability of PBHs shows the possibility in gravitational wave astronomy. There are some existing studies [11]}, [12]} about gravitational wave from high redshift PBH binaries. In addition to their studies, we present the potential detectable mass range of PBH binaries at high redshift and include the effect of initial abundance distribution of PBHs on detectable mass range.
